WO2022107627A1

WO2022107627A1 - Accelerator device

Info

Publication number: WO2022107627A1
Application number: PCT/JP2021/040952
Authority: WO
Inventors: 則泰鬼原; 純木村; 豪宏齊藤; 康弘大雄
Original assignee: 株式会社デンソー
Priority date: 2020-11-19
Filing date: 2021-11-08
Publication date: 2022-05-27
Also published as: JP7400701B2; US20230286378A1; DE112021006019T5; JP2022081118A; CN116507989A

Abstract

An accelerator device (10) comprises: a pad (20) that is to be stepped on by a driver; a pedal (40) that turns in an accelerator opening direction by means of a stepping force applied on the pad (20); an arm (50) for linking between the pad (20) and the pedal (40); and a biasing member (60) that keeps the pedal (40) biased in an accelerator closing direction. One end (51) of the arm (50) is press-fitted into a linkage part (22) of the pad (20). The pad (20) has a play elimination part (71, 72, 73, 74) which brings the one end (51) and the linkage part (22) into abutment with each other so as to eliminate play between the one end (51) and the linkage part (22) in the press-fitting direction.

Description

Accelerator device

Cross-reference of related applications

This application is based on Patent Application No. 2020-192456 filed on November 19, 2020, and the contents of the description are incorporated herein by reference.

This disclosure relates to an accelerator device.

Patent Document 1 discloses an accelerator device. The accelerator device is installed on the floor near the feet of the driver sitting in the vehicle interior, and the pedal inside the case and the pad outside the case are connected by an arm to detect the amount of depression of the pad by the driver.

China Utility Model No. 201511825

In Patent Document 1, the pad and the arm are assembled by fitting the protrusion of the arm into the connecting portion of the pad by press fitting. However, due to the design, it is necessary to set a clearance in the press-fitting direction between the protrusion and the stopper of the connecting portion, so that there is a play between the protrusion and the connecting portion after the press-fitting. With this play, when the driver switches between "depressing" and "returning" the pad operation, the contact portion between the protrusion and the connecting portion changes, so that there is a problem that an abnormal noise is generated. An object of the present disclosure is to provide an accelerator device in which the generation of abnormal noise is suppressed.

The accelerator device of the present disclosure includes a case installed on the floor, a pad arranged outside the case and stepped on by a driver, a pedal arranged inside the case and rotated in the accelerator opening direction by the stepping force of the pad, and a pad. It is provided with an arm connecting the pedal and the pedal, and an urging member for urging the pedal in the accelerator closing direction.

One end of the arm is fitted into the connecting part of the pad by press fitting. One or both of the arm and the pad has a play removing portion that abuts one end portion and the connecting portion to eliminate play in the press-fitting direction between the one end portion and the connecting portion. According to this, it is possible to form a structure in which there is no play between the connecting portion of the pad and one end portion of the arm. Therefore, the abnormal noise generated by play when the pad operation is switched between "depressing" and "returning" is eliminated.

The above objectives and other objectives, features and advantages of the present disclosure will be further clarified by the following detailed description with reference to the accompanying drawings. The drawing is
FIG. 1 is a side view of the accelerator device of the first embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a perspective view showing a state in which the pad and the arm of FIG. 1 are being assembled. FIG. 4 is a cross-sectional view showing a state in which the pad and the arm of FIG. 1 are being assembled, and is a view corresponding to FIG. 2. FIG. 5 is a cross-sectional view of a connecting portion between the pad and the arm of the accelerator device of the second embodiment, and is a view corresponding to FIG. 2. FIG. 6 is a cross-sectional view of a connecting portion between the pad and the arm of the accelerator device of the third embodiment, and is a view corresponding to FIG. 2. FIG. 7 is a cross-sectional view of a connecting portion between the pad and the arm of the accelerator device of the fourth embodiment, and is a view corresponding to FIG. 2. FIG. 8 is a cross-sectional view of a connection portion between the pad and the arm of the accelerator device of another embodiment, and is a view corresponding to FIG. 2. FIG. 9 is a cross-sectional view of a connection portion between the pad and the arm of the accelerator device of another embodiment different from FIG. 8, and is a view corresponding to FIG. 2. FIG. 10 is a cross-sectional view of a connecting portion between the pad and the arm of the accelerator device in the comparative form, and is a diagram corresponding to FIG. 2.

Hereinafter, a plurality of embodiments will be described based on the drawings. The same reference numerals are given to substantially the same configurations among the embodiments, and the description thereof will be omitted.

[First Embodiment]
As shown in FIG. 1, the accelerator device 10 of the first embodiment is installed on the floor panel FP of the vehicle body. In FIG. 1, the x-axis indicates the vehicle traveling direction, the y-axis indicates the vehicle width direction, and the z-axis indicates the vertically upward direction. Hereinafter, unless otherwise specified, the shape or configuration of the accelerator device 10 in the vehicle body installation state will be described. For example, "upper" or "upper" means upper or upper in a state where the accelerator device 10 is installed on the vehicle body.

The accelerator device 10 includes a case 30 attached to the floor panel FP, a pad 20 that is stepped on by a driver, a pedal 40 that rotates in the accelerator opening direction by the stepping force of the pad 20, and an arm that connects the pad 20 and the pedal 40. It includes 50 and a spring 60 as an urging member that urges the pedal 40 in the accelerator closing direction. FIG. 1 shows a state in which a cover (not shown) provided on the front side of the paper surface of the case 30 is removed.

The pad 20 is arranged outside the case 30 and is rotatably supported by the fulcrum portion 31 of the case 30 at the lower end. A protective wall 21 is provided on the side of the pad 20 to close the gap between the pad 20 and the case 30 so that the driver's foot is not pinched.

The pedal 40 and the spring 60 are arranged in the case 30. The pedal 40 is rotatably supported by a support shaft 41 substantially parallel to the y-axis. The spring 60 is interposed between the pedal 40 and the inner wall surface 32 of the case 30. The case 30 has a partition 33 located between the pad 20 and the pedal 40. The partition wall 33 is provided with an opening 34 through which the arm 50 penetrates, a fully closed stopper 35 that stops the arm 50 at the accelerator fully closed position, and a fully open stopper 36 that stops the pad 20 at the accelerator fully open position. ..

The arm 50 has a shaft portion 51 provided at one end on the pad 20 side and a hooking portion 52 provided at the other end on the pedal 40 side. The shaft portion 51 is assembled to the connecting portion 22 located in the middle of the pad 20 in the longitudinal direction. The hooking portion 52 is hooked on the tip end portion 42 of the pedal 40.

A structure in which the pad 20 is rotatably supported by a case 30 on the floor and the pad 20 is connected to the pedal 40 via an arm 50 is called an "organ pedal structure" by those skilled in the art. When the pad 20 is not depressed, the arm 50 comes into contact with the fully closed stopper 35. Further, when the pad 20 is stepped on to the fully open position, the pad 20 comes into contact with the fully open stopper 36.

As shown in FIGS. 2 and 3, the shaft portion 51 is integrally provided on the resin arm 50 so as to project on both sides in the width direction (that is, the y-axis direction) of the pad 20. The pad 20 has a pair of support walls 23 that rotatably support the shaft portion 51. The pair of support walls 23 are integrally projected on the back surface of the resin pad 20 so as to face each other with the shaft portion 51 interposed therebetween in the width direction of the pad 20. The support wall 23 projects from the plate-shaped base 24 constituting the stepping portion of the connecting portion 22 toward the case 30 side.

A bearing portion 25 is formed on the support wall 23. The bearing portion 25 is recessed in the central portion in the width direction of the support wall 23. In the shaft portion 51, one end portion 53 is fitted to the bearing portion 25 of one support wall 23, and the other end portion 54 is fitted to the bearing portion 25 of the other support wall 23. The portion of the support wall 23 on the tip side of the concave bearing portion 25 is a retaining 26. The shaft portion 51 is fitted between the pair of support walls 23 of the connecting portion 22 by press fitting. The press-fitting direction of the shaft portion 51 is substantially the same as the accelerator opening / closing direction.

Here, the problem of the comparative form shown in FIG. 10 will be described. In the comparative form, the pad 29 and the arm 59 are assembled by press-fitting the shaft portion 51 into the connecting portion 22 and fitting it into the bearing portion 25. However, in order to ensure that the arm 59 and the pad 29 are securely assembled in consideration of dimensional tolerances and the like, it is necessary to set a clearance 80 in the press-fitting direction between the shaft portion 51 and the retaining wall 26 of the support wall 23. be. Therefore, there is a play between the shaft portion 51 and the connecting portion 22 after press fitting by the amount of the clearance 80. With this play, when the driver operates the pad to switch between "stepping on" and "returning", the contact portion between the shaft portion 51 and the connecting portion 22 is between the retaining 26 side and the base 24 side (that is, the accelerator is opened). Since it changes between the direction side and the accelerator closing direction side), there is a problem that abnormal noise is generated.

On the other hand, in the first embodiment, the pad 20 has a protrusion as a "play removing portion" that abuts the shaft portion 51 and the connecting portion 22 to eliminate play in the press-fitting direction between the shaft portion 51 and the connecting portion 22. Has 71. Hereinafter, the protrusion 71 will be referred to as a play removal protrusion 71. The retaining 26 is located on one side in the press-fitting direction with respect to the shaft portion 51 (that is, the accelerator opening direction side), whereas the play removing protrusion 71 is located on the other side in the press-fitting direction with respect to the shaft portion 51 (that is, the accelerator is closed). Located on the directional side). The play removing protrusion 71 projects from the base 24 of the connecting portion 22 and abuts on the shaft portion 51 to eliminate the gap between the shaft portion 51 and the connecting portion 22 in the accelerator closing direction, and to direct the shaft portion 51 toward the retaining 26. By pressing it against one side in the press-fitting direction, the gap between the shaft portion 51 and the connecting portion 22 in the accelerator opening direction is eliminated. That is, the play removing protrusion 71 brings the shaft portion 51 into contact with the connecting portion 22 on both sides of the accelerator opening direction and the accelerator opening direction. In the first embodiment, one play removing protrusion 71 is provided at the center of the shaft portion 51 in the axial direction.

As shown in FIG. 4, the pair of support walls 23 are expanded by the shaft portion 51 when the shaft portion 51 is press-fitted, and elastically deformed so as to warp from the root portion to the tip portion. The removal protrusion 71 is provided on the pad 20 having the lower hardness of the arm 50 and the pad 20. Therefore, as shown in FIG. 4, when the shaft portion 51 is further pushed in from the position where the shaft portion 51 just contacts the play removing protrusion 71, the play removing protrusion 71 is plastically deformed. Then, when the interference between the retaining 26 and the shaft portion 51 is released, the support wall 23 elastically returns, and the bearing portion 25 fits into the

end portions

53 and 54 of the shaft portion 51 as shown in FIG. The play removing protrusion 71 is adjusted so that the play in the press-fitting direction between the shaft portion 51 and the connecting portion 22 is just eliminated by plastically deforming when the shaft portion 51 is press-fitted into the connecting portion 22.

(effect)
As described above, in the first embodiment, the shaft portion 51 of the arm 50 is fitted into the connecting portion 22 of the pad 20 by press fitting. The pad 20 has a play removing portion 71 that abuts the shaft portion 51 and the connecting portion 22 to eliminate play in the press-fitting direction between the shaft portion 51 and the connecting portion 22. According to this, the connecting portion 22 of the pad 20 and the shaft portion 51 of the arm 50 can be configured to have no play. Therefore, the abnormal noise generated by play when the pad operation is switched between "depressing" and "returning" is eliminated.

Further, in the first embodiment, the connecting portion 22 has a retaining 26 located on one side in the press-fitting direction with respect to the shaft portion 51. The play removing protrusion 71 is a protrusion that protrudes from the connecting portion 22 toward the shaft portion 51 or from the shaft portion 51 toward the connecting portion 22 on the other side in the press-fitting direction with respect to the shaft portion 51. According to this, when the arm 50 is assembled to the pad 20, one side of the shaft portion 51 is in contact with the retaining 26 on one side in the press-fitting direction, and the other side in the press-fitting direction is in contact with the play removing portion 71. , There is no play in the press-fitting direction.

Further, in the first embodiment, the play removing protrusion 71 is provided on the pad 20 which is the lower hardness of the arm 50 and the pad 20. According to this, when the shaft portion 51 is press-fitted into the connecting portion 22, the play removing protrusion 71 can be positively plastically deformed.

Further, in the first embodiment, the play removing protrusion 71 absorbs the play in the press-fitting direction between the shaft portion 51 and the connecting portion 22 by plastically deforming when the shaft portion 51 is press-fitted into the connecting portion 22. According to this, the connecting portion 22 of the pad 20 and the shaft portion 51 of the arm 50 can be configured to have no play.

[Second Embodiment]
In the second embodiment, as shown in FIG. 5, two play removing protrusions 71 are provided so as to be arranged along the axial direction of the shaft portion 51. In another embodiment, three or more play removing protrusions 71 may be provided. In this way, the number of play removing protrusions 71 can be changed according to, for example, adjustment of the press-fitting load of the shaft portion 51.

[Third Embodiment]
In the third embodiment, as shown in FIG. 6, the play removing protrusion 72 is integrally provided on the shaft portion 51. The play removing protrusion 72 is a protrusion that protrudes from the main body of the shaft portion 51 toward the base portion 24. In the third embodiment, one play removing protrusion 72 is provided at the center of the shaft portion 51 in the axial direction. In this way, the formation target of the play removing protrusion 72 can be changed according to, for example, the materials of the arm 50 and the pad 20.

[Fourth Embodiment]
In the fourth embodiment, as shown in FIG. 7, two play removing protrusions 72 are provided so as to be arranged along the axial direction of the shaft portion 51. In another embodiment, three or more play removing protrusions 72 may be provided. In this way, the number of play removing protrusions 72 can be changed according to, for example, adjustment of the press-fitting load of the shaft portion 51.

[Other embodiments]
In another embodiment, as shown in FIG. 8, the play removing portion 73 may be a spring made of metal, resin, or the like fixed to the pad 20 or the arm 50. In FIG. 8, the play removing portion 73 is inserted into the pad 20. Further, in another embodiment, as shown in FIG. 9, the play removing portion 74 may be an elastic member made of rubber or the like fixed to the pad 20 and the arm 50. In FIG. 9, the play removing portion 74 is adhered to the pad 20. As described above, the play removing portion may be composed of a member separate from the pad and the arm, and may not be plastically deformed when the shaft portion is press-fitted. In short, it suffices to bring the shaft portion and the connecting portion into contact with each other to eliminate play in the press-fitting direction of both.

In another embodiment, the play removing portion may be provided so as to be easily elastically deformed by having a cavity or a notch while being provided integrally with the pad or the arm.

In other embodiments, the play remover may be provided on both the pad and the arm.

The present disclosure is not limited to the above-described embodiment, and can be implemented in various forms without departing from the spirit of the present disclosure.

This disclosure has been described in accordance with the embodiments. However, the present disclosure is not limited to such embodiments and structures. The present disclosure also includes various variations and variations within the same range. Also, various combinations and forms, as well as other combinations and forms that include only one element, more, or less, are within the scope and ideology of the present disclosure.

Claims

The case (30) installed on the floor (FP) and
A pad (20) placed outside the case and stepped on by a driver,
A pedal (40) arranged in the case and rotated in the accelerator opening direction by the stepping force of the pad, and a pedal (40).
An arm (50) connecting the pad and the pedal,
An urging member (60) that urges the pedal in the accelerator closing direction, and
Equipped with
One end portion (51) of the arm is fitted into the connecting portion (22) of the pad by press fitting.
One or both of the arm and the pad have a play removing portion (71, 72, 73, 74) in which one end portion and the connecting portion are brought into contact with each other to eliminate play in the press-fitting direction between the one end portion and the connecting portion. ), The accelerator device.
The connecting portion has a retaining (26) located on one side in the press-fitting direction with respect to the one end portion.
According to claim 1, the play removing portion is a protrusion protruding from the connecting portion toward the one end portion or from the one end portion toward the connecting portion on the other side in the press-fitting direction with respect to the one end portion. The accelerator device described.
The accelerator device according to claim 2, which has a plurality of protrusions.
The accelerator device according to claim 2 or 3, wherein the protrusion is provided on the arm and the pad, whichever has a lower hardness.
One of claims 1 to 4, wherein the play removing portion absorbs play in the press-fitting direction between the one end portion and the connecting portion by plastically deforming when the one end portion is press-fitted into the connecting portion. Accelerator device described in.